diff --git a/README.md b/README.md
index 983ed12..0032687 100644
--- a/README.md
+++ b/README.md
@@ -10,31 +10,6 @@ nixos-rebuild switch --flake flake_path_directory#hostname
 nix flake update --extra-experimental-features "nix-command flakes"
 ```
 
-## Configure VM
-
-Configure VM
-```nix
-users.users.<user>.initialPassword = "<password>";
-virtualisation.vmVariant = {
-  # following configuration is added only when building VM with build-vm
-  virtualisation = {
-    memorySize = <RAM in MiB>; # Use 8192MiB memory.
-    cores = <CPU Core number>;
-    # And more here https://github.com/NixOS/nixpkgs/blob/nixos-unstable/nixos/modules/virtualisation/qemu-vm.nix     
-  };
-};
-```
-
-Build
-```bash
-nixos-rebuild build-vm --flake .#nixos-test
-```
-
-Run
-```bash
-./result/bin/run-nixos-vm-vm
-```
-
 ## Show changements between revisions
 
 
diff --git a/home/default.nix b/home/default.nix
index fe30178..4420680 100644
--- a/home/default.nix
+++ b/home/default.nix
@@ -20,7 +20,7 @@
     username = "florian";
     homeDirectory = "/home/florian";
 
-    stateVersion = "24.05";
+    stateVersion = "23.11";
   };
 
   programs.home-manager.enable = true;
diff --git a/hosts/nixos-test/default.nix b/hosts/nixos-test/default.nix
index 2c68260..4f14e7f 100644
--- a/hosts/nixos-test/default.nix
+++ b/hosts/nixos-test/default.nix
@@ -30,15 +30,5 @@
     };
   };
 
-  # Configure for testing in vm
-  users.users.florian.initialPassword = "test";
-  virtualisation.vmVariant = {
-    # following configuration is added only when building VM with build-vm
-    virtualisation = {
-      memorySize = 8192; # Use 8192MiB memory.
-      cores = 8;         
-    };
-  };
-
   networking.hostName = "nixos-vm"; # Define your hostname.
 }
diff --git a/modules/system.nix b/modules/system.nix
index 47a6898..8bf4d6e 100644
--- a/modules/system.nix
+++ b/modules/system.nix
@@ -56,5 +56,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "24.05"; # Did you read the comment?
+  system.stateVersion = "23.11"; # Did you read the comment?
 }